bpo-39322: Add gc.is_finalized to check if an object has been finalised by the gc (GH-17989)
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index c0d4a75..18f8d10 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -586,6 +586,24 @@
self.assertFalse(gc.is_tracked(UserFloatSlots()))
self.assertFalse(gc.is_tracked(UserIntSlots()))
+ def test_is_finalized(self):
+ # Objects not tracked by the always gc return false
+ self.assertFalse(gc.is_finalized(3))
+
+ storage = []
+ class Lazarus:
+ def __del__(self):
+ storage.append(self)
+
+ lazarus = Lazarus()
+ self.assertFalse(gc.is_finalized(lazarus))
+
+ del lazarus
+ gc.collect()
+
+ lazarus = storage.pop()
+ self.assertTrue(gc.is_finalized(lazarus))
+
def test_bug1055820b(self):
# Corresponds to temp2b.py in the bug report.